Answer:
When a galaxy moves towards the earth, it will emit blue colour light.
Doppler blueshift occurs when the source of light is coming near to its observer. Alternatively, Doppler redshift occurs when the emitter of light moves away from its observer.
Blueshift occurs when wavelength of light decreases. Redshift occurs when wavelength of light increases.
Blueshift makes the colour of the light move from red towards blue.
The shift in wavelength is determined by observing the spectrum with a spectrometer.
Stonehenge is an important historical site that is located in __________.
A.
Bulgaria
B.
England
C.
Greece
D.
Russia
B. England
Stonehenge is an important historical site that is located in England.
Explanation:Stonehenge is an ancient monument in Wiltshire, England, 2 miles west from Amesbury. It consists of a group of standing stones, with all standing stone about 4.0 meters raised, 7 feet (2.1 m) wide and hefting about 25 tons. The stones are arranged inside barriers in the centre of the thickest tangle of Neolithic and Bronze Age buildings in England, including numerous number interment piles.
How does a contracting protostar convert gravitational potential energy into thermal energy?
The answer of how it is convert is the sun generates energy by slowly contracting in size; converting gravitational potential energy into thermal energy and this is called gravitational contraction. Gravitational collapse is the narrowing of an astronomical object due to the effect of its own gravity, which tends to draw matter inward toward the center of gravity.
A contracting protostar converts gravitational potential energy into thermal energy through a series of processes involving gravitational collapse, kinetic energy transformation, and thermalization via particle collisions.
Protostars form from large clouds of gas and dust in space.Gravitational attraction causes these clouds to collapse inward.As the gas particles move toward the center, gravitational potential energy is converted into kinetic energy.The kinetic energy is further transformed into thermal energy through collisions among gas particles.This process heats up the gas, turning it into a hot, dense ball known as a protostar.As the protostar continues to contract, more gravitational potential energy is converted to thermal energy.The protostar's growing heat is radiated away, allowing the contraction to continue rapidly.The process slows down only when the protostar becomes dense and opaque enough to trap the heat generated.What geographic features such as river systems and climates characterize india's three major landform regions
"monsoon"
Explanation:A monsoon is a periodically variation in the predominant wind direction, that normally carries with it an unusual variety of climate. It essentially continuously points to the Asian monsoon, a vast region spreading from India to Southeast Asia wherever monsoon circumstances prevail.
The characteristics of the monsoon weather are the periodical change of draft, the humid summertime and the dry wintertime. In a world-wide judgment, there are various ranges which have a monsoon weather.
Within the a group of climates, the two main types are wet tropical climates and tropical ________.
The two main types of climates within the group are wet tropical climates and tropical rainforest climates.
Explanation:Within the group of climates, the two main types are wet tropical climates and tropical rainforest climates. Wet tropical climates have warm temperatures year round with a high level of precipitation, typically in the form of rain. These climates have various subgroups that indicate how rainfall is distributed throughout the year, with some having a dry season and a wet season (monsoon). On the other hand, tropical rainforest climates, also known as tropical wet forests, are found in equatorial regions and are home to a great variety of plant and animal life.
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When a patch of land is cleared in a tropical rainforest, the vegetation is often burned to enrich the soil with nutrients from the burned plant material. What description applies to this situation?
Answer:
This method is called Slash-and-burn agriculture.
Explanation:
This is a farming method which consists on cutting and burning the plants in a forest to create a field for agriculture. The cut trees and plants are left to dry, and the they are burned, resulting in a nutrient rich layer of ash which fertilizes the soil, as well as eliminating weeds and pests temporarily. After 3 to 5 years, the soil is depleted of nutrients, causing the farmers to abandon the field and move to a new area. This technique is not sustainable for large human populations.
an example of quaternary economic activity is____.
1.Packing Vegetables in a can
2. Growing and harvesting vegies in a field
3. Deciding how many cans of Vegetables to store at a warehouse
4. Eating Vegetables at dinner
3. Deciding how many cans of Vegetables to store at a warehouse
The objects that are sometimes visible in the night sky with long tails are
The objects that are sometimes visible in the night sky with long tails are comets.
Comets are celestial bodies composed primarily of dust, ice, and rocky debris that orbit the Sun in elongated, elliptical paths. When comets approach the inner solar system, heat from the Sun causes the volatile substances, such as water ice, to sublimate, producing a glowing coma (a cloud of gas and dust) and sometimes a long, luminous tail.
As a comet travels closer to the Sun, solar radiation and solar wind cause the material in the coma to stream away from the comet's nucleus, forming a tail that points away from the Sun due to the force of solar radiation pressure. The tail of a comet can extend for millions of kilometers and may consist of ionized gas (ion tail) and dust particles (dust tail) that reflect sunlight, making them visible from Earth.
Comets are typically observed as transient objects in the night sky, appearing as faint smudges or points of light with distinctive tails. They have been observed throughout history and have fascinated astronomers and skywatchers alike due to their unpredictable appearances and spectacular displays.
The complete question is:
The objects that are sometimes visible in the night sky with long tails are _______.
One of President F. W. de Klerk’s most important actions was _____.
a)Protesting economic sanctions B) releasing Nelson Mandela from prison C) Punishing the African National Congress D) releasing Thabo Mbeki from prison
Answer:
President F. W. de Klerk’s most important actions was releasing Nelson Mandela from prison
Explanation:
President F. W. de Klerk’s most important actions was to put an end to the policy of Apartheid, a policy or system of segregation or discrimination on the basis of race.
F.W . de Klerk managed that process, and in the scope of his vision, freed Nelson Mandela from 27 years of prison life. Mandela and Klerk, after a long struggle, succeeded in the eradication of racism and changed South Africa into a constitutional democracy.
What is one way that developed countries help underdeveloped countries to improve their economies?
a)taxing imports from those countries
b)cutting the cost of exports to those countries
c)blocking trade with developing countries
d)investing money in those countries
How do observations of distant galaxies help us learn about galaxy evolution?
a.observations at different distances show galaxies of different ages and therefore different stages of evolution.
b.we can observe the birth of galaxies.
c.we can observe the evolution of a single galaxy over time.
d.we can observe two galaxies merging and what the result is, helping us learn how mergers affect evolution.
e.we can see what our galaxy used to look like and therefore theorize about the physical processes that led to its current appearance?
In the graph above, which country had more railroad than the United States in 1870?
Question 2 options:
Germany
Russia
France
UK
how were steam powered ships different from sailboats
A. Steamboat ski travel against the current on a river
B. sailboats could travel against the current on a river
C. sailboats could carry large cargos
D. steamboats could carry large cargos
Earth Science does anyone know the answer?
You would find this answer in letter A because the sun is located at the main sequence.
The early indigenous populations of Central America were fisherman. Please select the best answer from the choices provided T F
Which winds stir up powerful storms in south asia that release vast amounts of rain and cause severe flooding?
Environmental concerns are important, but which country has offers the least amount of help to its environment?
China
South Korea
North Korea
Japan
Answer:
North Korea
Explanation:
All of the listed countries are causing damage to the environment, but Japan, South Korea, and China are also trying to fix the problem, while North Korea don't seem to be bothered about it. South and Japan in particular are investing a lot in renewable energy sources in order to decrease the emission of greenhouse gases, as well as having strict laws about protecting the environment. China is one of the biggest polluters in the world, but at the same time is putting lot of efforts lately to improve the well being of the environment, having big success in making the deserts in the north of the country covered with greenery. North Korea is another case. It is a country that in order to be able to sustain itself uses everything that it can, usually meaning that the environment is heavily damaged, and in order to not lose any of the very important finances for their existence, they don't spend anything to protect the environment.
Answer:
was north korea right?
Explanation:
Does erosion involves little or no movement of the decomposed rocks and minerals
The no, erosion does not involve little or no movement of the decomposed rocks and minerals.
Erosion is the process by which the surface of the Earth is worn away by the action of water, glaciers, winds, waves, ice, or other geological agents that abrade, ear down, dissolve, or otherwise remove rock and soil material from one location on the Earth's crust, then transport it to another location where it is deposited. This process inherently involves the movement of decomposed rocks and minerals, which are carried away by the erosive forces.
In contrast, weathering is the process that breaks down rocks and minerals into smaller particles without involving their movement. Weathering can be physical (mechanical) or chemical. Physical weathering involves the breakdown of rocks and minerals without chemical changes, such as by freezing and thawing or by the physical abrasion of rock surfaces. Chemical weathering involves chemical reactions that alter the composition of the rock, such as oxidation or dissolution by acidic rainwater.
Once the rocks and minerals have been broken down by weathering, erosion can take place, moving the smaller particles, which can be deposited elsewhere to form sediments and eventually sedimentary rocks. Therefore, erosion is characterized by the significant movement of weathered rock and mineral particles.
8. What kinds of features would you expect to see at the edges of two plates, like these that are moving apart at their boundary?
AT LEAST ONE
Uganda,Rwanda, and Burundi are landlocked but have what
Which Cold War event occurred last
The Berlin airlift lasted from June 1948 till May 1949, after the first C-47 cargo plane landed in Berlin as a response to the blockade of Berlin by the Soviet Union. In August 1961, the communist government started building a wall in Berlin after many people started moving to the west.
The government argued that the reason behind the wall was to keep the citizens in and separate the east from the west while the soviets said it is to keep capitalism out. After 28 years of building the wall, and on the 10th of November 1989, the Berlin wall was destructed responding to several demands for freedom of movement.
In which part of Australia would you expect to find a tropical climate?
A) northern
B) southeast
C) southwest
D) western
Answer: A northern
Explanation:
What would happen to the seasons if earth were tilted 35 degrees off its orbital plane instead of the usual 23.5 degrees?
Question Options:
A) The seasons would disappear.
B) Winters and summers would be more severe.
C) Winters and summers would be less severe.
D) The seasons would be shorter.
Answer: B) Winters and summers would be more severe.
Explanation: It is general knowledge that the current tilt of the earth is around 23.5 degrees. A tilt will significantly affect the current climate. The winters would be colder and summers would be hotter. This is because the temperature gradient between the equatorial centre and the pole would be more extreme this would increase wind speeds.
During the summer monsoon season, the weather in Bangladesh is a. cold and wet. b. hot and wet. c. hot and dry. d. cold and dry.
Answer:
During the summer monsoon season, the weather in Bangladesh is hot and wet.
Explanation:
The monsoon arrives in Bangladesh through the 'south-east' towards the end of the month of May. Though the temperatures in the region drop down to about 30° C to 32°C from 40°C after the arrival of the monsoon, the weather in the region still remains hot and humid. The monsoon in Bangladesh lasts for five long months from 'June to October'.Metallic minerals become concentrated in liquid magma because they __________.
Answer:
Metallic minerals become concentrated in liquid magma because they undergo igneous and hydrothermal processes.
Explanation:
The magma that is formed deep beneath the 'surface of the Earth' carries various earth minerals to the surface of the Earth through convective actions. It is responsible for the melting of solid minerals in the interiors of Earth. The minerals as a result of melting, liquify and reach the levels where their density allows them to float. This results in the concentration of minerals in liquid magma.All __________ galaxies are spiral galaxies that have small, luminous nuclei
If enough water pressure builds under the surface of the ground, the water can burst through cracks in the surface, forming a(n) _______.
Answer:
Geyser
Explanation:
A geyser is a type of spring that is characterized by the discharge of the water and is rushed out wi a force and is mainly due to the hydrological forces and thus resulting in the flash or water at the surface in the form of a spring. Generally, these geysers are located near the volcanic areas and have a proximity to the magmas and the lavas flow. These impacts may be geologic and human-induced and they may also be created by the jet-like eruption of the gases inside the earth crust and thus comprise of the carbon dioxides and the sulfides. A basic eruption of the geothermal heat that is derived firm the hot interruptions of the crustal floors and the various moons in the solar system are also known to support this type of system also.Culture is ____ a factor in world conflict
How did southeast Asia’s physical geography encourage the cultivation of rice?
In december 1979, soviet troops marched into afghanistan to help put down a revolt at the request of _____?
A: the afghan government
B: the united states
C: al-qaida
D:the taliban
The wholesale removal of sediment by wind is called:
Answer:
The wholesale removal of sediment by wind is called deflation.
Explanation:
Deflation is the phenomenon of displacement of small particles, seeds and other finer grains by wind. The materials which are carried and deposited are called the sediment.
In areas where deflation occurs, only big rocks are visible. The only fine particles of materials are hidden by these big rocks.
Desert pavements are the result of deflation. Desert pavements consist of big rocks and other solid fragments since smaller fragments have been eroded in deflation. The fragments left behind remain consistent hence, desert pavements remain stable over time.